Steam Boilers, Engines, Nozzles and Turbines
The impulse reaction turbine has its driving force

As an impulsive force
As a reaction force
None of the listed here
Partly as an impulsive force and partly as a reaction force

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Steam Boilers, Engines, Nozzles and Turbines
The object of producing draught in a boiler is

To discharge the gases of combustion to the atmosphere through the chimney
All of the listed here
To exhaust the gases of combustion from the combustion chamber
To provide an adequate supply of air for the fuel combustion

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